CUTTING TOOL INCLUDING A CUTTING INSERT RETAINING AND ADJUSTING MECHANISM

摘要

A cutting tool (5) includes a cutting insert retaining and adjusting mechanism. The cutting insert retaining and adjusting mechanism is associated with a recess (26) in the cutting tool (5) and includes a nest (24) slidably mounted in the recess (26). The nest (24) includes a cutting insert pocket (22). The cutting insert retaining and adjusting mechanism includes a first wedge (46) adapted to selectively exert pressure on the nest (24) to retain the nest (24) in a desired position in the recess (26), and a second wedge (44) adapted to selectively exert pressure on a cutting insert (20) positioned in the cutting insert pocket (22) to retain the cutting insert (20) in a desired position. The mechanism further includes an adjustment screw (88) including a first threaded portion (88a) and a second threaded portion (88b). The first threaded portion (88a) is threadedly disposed in a threaded bore (84) in the cutting tool body (10), and the second threaded portion (88b) is threadedly disposed in a threaded bore (86) in the nest (24). The first threaded portion (88a) has the same handedness but a different thread pitch as the second threaded portion (88b). Rotating the adjustment screw (88) axially slidably advances and retracts the nest (24) in the recess (26).